X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fqueue.h;h=879f7a2d16ca5734679d30f9a9171185839385fd;hb=a0bc29a541fc7dc6e20137d5558e2094d614e6ab;hp=e94d20c468488e4d4d28661d088bbf516afed6e4;hpb=34e63086edddcae06d7c1a4fa84fec0861e50758;p=openvswitch

diff --git a/lib/queue.h b/lib/queue.h
index e94d20c4..879f7a2d 100644
--- a/lib/queue.h
+++ b/lib/queue.h
@@ -17,6 +17,8 @@
 #ifndef QUEUE_H
 #define QUEUE_H 1
 
+#include <stdbool.h>
+
 /* Packet queue. */
 struct ovs_queue {
     int n;                      /* Number of queued packets. */
@@ -31,4 +33,9 @@ void queue_advance_head(struct ovs_queue *, struct ofpbuf *next);
 void queue_push_tail(struct ovs_queue *, struct ofpbuf *);
 struct ofpbuf *queue_pop_head(struct ovs_queue *);
 
+static inline bool queue_is_empty(const struct ovs_queue *q)
+{
+    return q->n == 0;
+}
+
 #endif /* queue.h */